English Dictionary

mainline

/ˈmeɪnˌlaɪn/

noun

(aviation) An airline's main operating unit, as opposed to codeshares or regional subsidiaries. / (rail transport) The principal route or line of a railway.

The mainline of the airline is responsible for the majority of its flights.

意味（1）

(aviation) An airline's main operating unit, as opposed to codeshares or regional subsidiaries.

意味（2）

(rail transport) The principal route or line of a railway.

Coordinate term: trunk line

意味（3）

(fishing) In longline fishing the central line to which the branch lines with baits are attached.

意味（4）

(plumbing) The pipeline carrying wastewater to the public drains or a septic tank.

Many plumbers will tell you they don't go off property since that is the local water company's responsibility. Most local water companies would prefer that, if a line is snaked, it is snaked all the way to the mainline connection.

意味（5）

(slang) A principal vein into which a drug can be injected.

I'm searching for my mainline / I said I couldn't hit it sideways

意味（6）

(computing) The main repository for a software project, from which different versions (forks) may be split off.